问题
选择题
—Don’t _____ so often. It’s bad for your health.
—I have to. But I know I should have enough sleep.
A．get up
B．stay up
C．look up
D．come up
答案
答案：B
题目分析：句意：不要经常熬夜，这样对你的健康不利。所给选项中get up是起床的意思，stay up是熬夜的意思，look up是向上看或查找的意思，come up是出现的意思，根据题意只能选B。